Question

the cost of pen is three times cost of a pencil , write a linear equation in two variable s to represent this statement​

Answer 1

Answer:

Let the cost of a pen be x and the cost of a pencil be y

According to the statement, cost of a pen is thrice the cost of a pencil

⇒x=3y

⇒x−3y=0 which is a linear equation in two variables

Answer 2

Answer:

Let the Pen be x

Let the pencil be y

x+y =3y

3y+y=x

4y-x

•°• the cost of pen is 5/-